Thanks for the replies guys.
Mark, member of another forum I'm on, bought a set of grips a few weeks back and posted the following on a different forum. It brought a few things to light on the design and function of them and I thought it was important to share.
I've had a set on my TLR for 500-600 miles now. Me no like.
Out of the box, I was a bit less than impressed. They certainly don't look like a grip that costs $18. My old $6 grips certainly look higher quality. I didn't want to judge too soon though, perhaps the comfort was worth a slightly shoddy look, these are just grips afterall and not a "bling" add-on. They're more comfortable that the plain rubber grips I had on the bike. However, they don't seem any more comfortable that the other brands of gel grips I've used.
The big problem from me is wear. After only 500 miles, these already look MUCH worse than the grips I took off and the old grips had approx. 12,000 miles on them. At the rate these are wearing, they'll be off my bike and in the trash in a few weeks.
As I said, these have between 500-600 miles on them. My bike is garaged, so the only sun time has been gas and food stops during rides. They haven't had a canyon dancer put on them or even been in the rain.
I of course sent this same info and pics to the factory and asked them for an explaination. I talked to Paul, owner of Spider Grips and Spider on this forum, today and discussed Mark's grips. Two things came of that discussion.
The way he explained it to me is like this. Most dual compound grips are made similar to an egg. Hard on the outside with the gel or soft part in the middle. That's why cosmetically they last longer but the anti-vibration is not as good. But due to the design of their grips, they are made similar to a tire. Soft on the outside with the hard part in the middle. Also like a tire, to get the full performace out of them, you have to scuff them in. Basically, the wear you are seeing on Mark's grips is this scuffing in. His riding style for some reason just scuffed them in faster than normal. Due to pressure, hand movement, riding style, or some other factors. Also, he said that they had changed the compound a lot during development to get to a happy medium between wear and comfort. For most of you, the wear will take a good while to happen, so basically, Mark is the exception rather than the rule.
He was actually pleased to see this come up as Mark is the first street rider he's seen to do this. In the 3 yrs of development and testing, he has only seen one other person that can do this to the grips this fast. That person happens to be a baja racer that they sponsor. Obviously, baja racing is a lot rougher than most street riding or road racing, so that's why it is so suprising. So what he asked me to tell Mark was to keep them on and see how they last. The wear should slow and the performance should get even better. It should take a while to wear them down to where they need replacing.